Window ventilator



fihATTORNEYS.

WINDOW VENT ILATOR J. D. M AVINNE-Y Filed April 25,

o oo 0 0 0 Dec. 9, 1924.

II II II V HHIHIUIIHIIIIIHIIIH1 Patented Dec. 9, 1924.

PATENT OFFICE...

JAMES D. MOAVINNEY OF ROCHESTER,. NEW YORK.

WINDOW 'VENTI-LATO R.

Application filed April 25, 1922'. Syeri-al No. 556,438.

To aZZ whom it may GO'Nf'W-W,

Be it known that 1, JAMES D. lWQJAYI'N- XEY, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Vindow Ventilators, of which the following is a specification.

The present invention relates to window ventilators and more particularly to the type designed to be placed in a window frame above or below a sash operating in said frame, an object of this invention being to provide a construction which will be inexpensive to manufacture, durable in use, and provide for effective ventilation of a room, provision being made whereby the amount of air passing through the ventilator may be varied at will and provision also being made whereby the ventilator will not produce an undesirable draft.

To these and other ends, the invention consists of certain parts and combinations of parts. all of which will be hereinafter described: the novel features being pointed out in the appended claim.

In the drawings:

Fig. 1 is a view of the inner face of the ventilator secured in a window frame below the lower sash;

Fig. 2 is a view of the ventilator removed from a window frame and being shown partially in section;

Fig. 3 is a section on the line 33, Fig. 2;

Fig. l is a section on the line l-l-, Fig. 1, showing the ventilator open;

Fig. 5 is a section on the line 55, Fig. (3, showing the ventilator closed; and

Fig. 6 is a fragmentary view partially in section showing the ventilator in closed position.

Referring more particularly to the drawings, 1 indicates the main ventilating member which is formed preferably from sheet metal and provided with ventilating openings 7 arranged in circular clusters and also with flanges 2 at its upper and lower edges turned inwardly, said flanges having smaller overhanging flanges 3 at their outer edges lying on the inner sides of the flanges 2 and forming guides. On these guides, extension members 4 operate. Each extension member is formed from sheet metal and provided with inwardly extending flanges 5 on threeof: its edges, the flanges on the upper and lower edges operate between the;- flanges 2 and under the overhanging flanges 3, while the flange 5 at the end of each extension 4 is provided with openings through which fasteners 6 may be passed in order to secure the ventilator to a window frame either above or below the sash, for example as illustrated in Fig. 1 of the drawings. It is apparent that these extensions with the main portion will permit the ventilator to be adapted to fit windows of different widths.

The ventilator also embodies a ventilating member 8 in the form of a sheet metal piece with inwardly turned flanges 9 operating between the flanges 2 and under the overhanging flanges 3 so that these flanges 2 and 3 serve as a common guiding means for the ventilating member 8 and the extensions 4. This ventilating member 8 has large circular openings 10 the area of each of which is substantially equal to the area of each cluster of the small openings 7, so that when the openings 10 are over the clusters, air may pass through the openings 10 and the clusters. The clusters of openings 7 and the openings 10 are spaced apart, so that when the ventilator slide 8 is in one position, the openings and clusters will be out of registration and no air can pass through the ventilator.

In order to limit the movement of the slide 8, the ventilator member 1 is provided with stops 11 which will cooperate with the ends of the slide 8 and define the open and closed positions of the ventilator.

The ventilator slide 8 may also carry a deflector which may be in the form of a box-like structure 12 formed of sheet metal and secured to the rear face of the slide 8, the top of this structure being open at 13, so that the air passing through the ventilator will be deflected in an upward direction and not create any undesirable draft. If desired the deflector may be provided with clusters of openings 14, which will lie opposite the clusters 7 when the ventilator is in an open condition.

The ventilating member 8 may be used alone as a ventilator for the top of a window, where it is desired to permit the con tinuous entrance of fresh air, said member being, in this instance, made removable from the member 1 and being of a length co-extensive With the width of the window openmg.

hat I claim as m invention and desires to secure by Letters atent is: V

A Window ventilator comprising a main ventilating member formed from sheet metal with flanges bent at right angles thereto from the top and bottom edges thereof on the inner side, said flanges having flanges overlapping them on the opposed sides of said first mentioned flanges, and extension members having bent therefrom flanges at right angles thereto on the top and bottom edges thereof on their inner sides, said last named flanges being received between the first mentioned flanges of the ventilating member and the overlapping flanges, and a second ventilating member having bent therefrom flanges at right angles thereto along its top and bottom edges on the inner side thereof and also operating between the first mentioned flanges of the ventilating member and the overlapping flanges in line With the extensions, said second named ventilator carrying a deflector movable therewith.

J AMES D. MGAVINNEY. 

